万吨连铸坯氧气转炉炼钢厂设计

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1、1000万吨连铸坯氧气转炉炼钢厂设计设计总说明转炉炼钢是现代钢铁联合企业生产环节中不可缺少的一部分，连接着炼铁和炉外精炼，连铸，轧钢等生产工艺。本设计为具有代表性的氧气顶底复吹工艺，预计年生产能力为1000万吨。车间设有公称容量为300吨的转炉三座，RH精炼炉2座、方坯连铸机2台，板坯连铸机2台。转炉的冶炼周期42分钟，吹氧时间19分钟。根据国内外转炉炼钢技术的发展趋势，结合设计任务书中普碳钢、低合金钢、汽车板的品种需要，选择了RH炉外精炼设备，进行全连铸生产。本次设计在对转炉物料平衡和热平衡计算的基础上，对炼钢车间的主要设备参数进行了设计、选型，完成了主体设备选

2、择、炼钢工艺设计、主厂房工艺布置和设备布置。编制说明书一份，绘制转炉炉型图、车间平面图、剖面图各一张，完成专题部分及翻译与冶金专业相关的外文文献。关键词：炼钢，顶底复吹，精炼，连铸，工艺设计DesignDescriptionConvertersteelmakingisamodernintegratedsteelproductionprocessesindispensablepartconnectingtheouterironandrefining,continuouscasting,rollingandotherproductionprocesses.Inthis

3、paper,therepresentativeprocesscombined-blowingoxygenconverterprocesswithascaleof108continuouscastingbilletannualisdesigned.Intheworkshop,mainequipmentsincluding3×300tconvertersanditsauxiliaryequipmentswith2RHrefiningfurnaces,2setsofbilletcontinuouscastingmachineand2setsofslabcontinuou

4、scastingmachinearedesigned.TheSmeltingperiodissetfor42minutessinwhichtheactualoxygenblowingtimeisonly19minutes.Dependingonthedevelopmenttrendofsteel-makingprocessandthequalityrequirementofcarbonsteel,lowalloysteelandautomobileplate,RHrefiningisselectedtofulfillcontinuouscasting.Ontheb

5、aseofthematerialandheatbalancecalculation,thesizeofsteel-makingplantworkshopspananddeviceassign,personnelplacementismade.Aprojectinstructionisredacted,furnacesizegraphic,agroundplaneandasectionalviewoftheworkshoparealsosubmitted.Andfinally,Completethethematicpartandtranslationofforeig

6、ndocumentsrelatedtometallurgicalprofession.KeyWords:steelmaking,combined-blown,refining,continuouscasting,processdesign目录1文献综述.........................................................11.1中国钢铁行业的发展历程.....................................11.2中国钢铁行业现状......................................

7、.....11.2.1钢铁产业集中度低......................................11.2.2钢铁产品结构不合理....................................11.2.3钢铁企业资产负债率较高................................21.3炼钢生产在整个系统的作用...................................21.4中国氧气转炉的发展历程.....................................21.5钢铁企业未来发展展望...........

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